diff --git a/doc/bookstore-en.md b/doc/bookstore-en.md
index 38be6b46..81b0625f 100644
--- a/doc/bookstore-en.md
+++ b/doc/bookstore-en.md
@@ -57,6 +57,12 @@ And now, let’s walk through the complete flow of quickly create a microservice
 
 * install etcd, mysql, redis
 
+* install protoc-gen-go
+
+  ```shell
+  go get -u github.com/golang/protobuf/protoc-gen-go
+  ```
+
 * install goctl
 
   ```shell
diff --git a/doc/bookstore.md b/doc/bookstore.md
index 55dfcca6..f3ebde45 100644
--- a/doc/bookstore.md
+++ b/doc/bookstore.md
@@ -57,6 +57,12 @@
 
 * 安装etcd, mysql, redis
 
+* 安装`protoc-gen-go`
+
+  ```shell
+  go get -u github.com/golang/protobuf/protoc-gen-go
+  ```
+
 * 安装goctl工具
 
   ```shell
diff --git a/doc/shorturl-en.md b/doc/shorturl-en.md
index 6d4a987b..a2f1a25d 100644
--- a/doc/shorturl-en.md
+++ b/doc/shorturl-en.md
@@ -60,6 +60,12 @@ And now, let’s walk through the complete flow of quickly create a microservice
 
 * install etcd, mysql, redis
 
+* install protoc-gen-go
+
+  ```
+  go get -u github.com/golang/protobuf/protoc-gen-go
+  ```
+
 * install goctl
 
   ```shell
diff --git a/doc/shorturl.md b/doc/shorturl.md
index 77d39462..8d6afb58 100644
--- a/doc/shorturl.md
+++ b/doc/shorturl.md
@@ -60,6 +60,12 @@
 
 * 安装etcd, mysql, redis
 
+* 安装`protoc-gen-go`
+
+  ```shell
+  go get -u github.com/golang/protobuf/protoc-gen-go
+  ```
+
 * 安装goctl工具
 
   ```shell